Kinematic soil-structure interaction (SSI) effects cause foundation-level motions to deviate from free-field motions. Simplified procedures to account for kinematic SSI effects are available in design guidelines for regular buildings and have been calibrated for regular buildings with limited foundation size and depth of embedment. As a result, their application to structures with much larger foundation footprints and deeper embedment depths is questionable. Kinematic interaction effects can be used to reduce foundation-level ground motions relative to those specified in the free-field, and this can be cost-effective especially for structures with larger footprints and embedment depths. The objective of this study is to quantify the extent of deviations between the use of available simplified procedures and empirical data for a select group of structures with larger footprints and embedment depths. In this study, a dataset of earthquake motions recorded at the instrumented structures in Japan is used to evaluate kinematic SSI effects, which are quantified in terms of the transfer function and the ratio of response spectra between foundation motions and corresponding free-field motions. Transfer functions represent the ratio between the free-field and the foundation level of a structure motion in the frequency domain and can be obtained by dividing Power Spectral Density functions of foundation motion and corresponding free-field motion. Finally, these empirical functions are compared to the available simplified formulations such as the semi-empirical transfer function and the ASCE/SEI 41–17 recommended ratio of response spectra, and the results are presented in terms of residuals. The overall trends of residuals indicate that the current simplified procedures tend to overestimate the foundation motions in structures with large footprints and embedment depths, and the extent of overestimation is higher for the ratio of response spectra compared to transfer functions. Thus, in future studies, these simplified procedures should be revised for applications in structures with large footprints and embedment depths.

运动学土壤结构相互作用 (SSI) 效应导致地基运动偏离自由场运动。用于解释运动学 SSI 效应的简化程序可在常规建筑物的设计指南中获得，并且已针对具有有限基础尺寸和嵌入深度的常规建筑物进行了校准。因此，将它们应用于具有更大基础占地面积和更深嵌入深度的结构是有问题的。相对于自由场中指定的运动，运动学相互作用可用于减少地基水平的地面运动，这可能具有成本效益，尤其是对于具有较大占地面积和嵌入深度的结构。本研究的目的是量化使用可用的简化程序和经验数据之间的偏差程度，用于选择具有较大足迹和嵌入深度的一组结构。在这项研究中，日本仪器结构记录的地震运动数据集用于评估运动学 SSI 效应，根据传递函数和基础运动与相应的自由场运动之间的响应谱之比对其进行量化。传递函数表示频域中结构运动的自由场和基础水平之间的比率，可以通过将基础运动的功率谱密度函数与相应的自由场运动相除而获得。最后，将这些经验函数与可用的简化公式（如半经验传递函数和 ASCE/SEI 41-17 推荐的响应谱比）进行比较，结果以残差形式表示。残差的总体趋势表明，当前的简化程序倾向于高估具有大足迹和埋置深度的结构中的基础运动，并且与传递函数相比，响应谱比的高估程度更高。因此，在未来的研究中，这些简化的程序应该针对在具有大足迹和嵌入深度的结构中的应用进行修改。残差的总体趋势表明，当前的简化程序倾向于高估具有大足迹和埋置深度的结构中的基础运动，并且与传递函数相比，响应谱比的高估程度更高。因此，在未来的研究中，这些简化的程序应该针对在具有大足迹和嵌入深度的结构中的应用进行修改。残差的总体趋势表明，当前的简化程序倾向于高估具有大足迹和埋置深度的结构中的基础运动，并且与传递函数相比，响应谱比的高估程度更高。因此，在未来的研究中，这些简化的程序应该针对在具有大足迹和嵌入深度的结构中的应用进行修改。